They are utterly niggardly (in coming to your aid). Whenever there is danger, you will see them looking at you, their eyes rolling as though they were on the verge of fainting at the approach of death. But when the danger passes away, their greed for wealth prompts them to greet you with their sharp, scissor-like tongues. These are the ones who never truly believed, and so Allah has caused their deeds to be reduced to naught. That is easy enough for Allah.